Physics, 12.10.2020 23:01 madscharcks00
How does a Geiger counter measure radiation levels?
a. Radiation is absorbed by gas atoms, which undergo phosphorescence and emit a different radiation.
b. Radiation is absorbed by gas atoms, which undergo nuclear reactions and emit a different radiation.
c. Radiation knocks neutrons out of gas atoms, which causes the gas atoms to become unstable.
d. Radiation knocks electrons out of gas atoms, which allows the gas to conduct an electric current.
Answers: 2
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Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
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How does a Geiger counter measure radiation levels?
a. Radiation is absorbed by gas atoms, which un...
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